.px2rem(@name, @px){
    @{name}: @px / 75 * 1rem;
}
body{
    background: #eeeeee;
    .header{
        .px2rem(height, 90);
        width:100%;
        background: #000;
        color: #c6c6c7;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: fixed;
        left:0;
        top:0;
        z-index: 109;
        .left,.right{
            .px2rem(width, 150);
            .px2rem(line-height, 90);
            .px2rem(font-size, 28);
            text-align: center;
        }
        .center{
            .px2rem(font-size, 30);
        }
    }
    .nav{
        .px2rem(margin-top, 90);
        .px2rem(height, 90);
        background: #ffffff;
        ul{
            .px2rem(height, 90);
            display: flex;
            justify-content: space-between;
            li{
                .px2rem(line-height, 90);
                .px2rem(padding-left, 10);
                .px2rem(padding-right, 10);
                .px2rem(font-size, 30);
                color: #999;
            }
            .on{
                border-bottom: 2px solid orangered;
                color: #000;
            }
        }
        ul li:first-child{
            margin-left:20%;
        }
        ul li:last-child{
            margin-right:20%;
        }
    }
    .main{
        width: 100%;
        .div{
            background: #ffffff;
            .px2rem(margin-bottom, 20);
            .img{
                width: 100%;
                position: relative;
                img{
                    width: 100%;
                }
                p{
                    position: absolute;
                    bottom: 0;
                    left:0;
                    color: #ffffff;
                    .px2rem(line-height, 90);
                    .px2rem(padding-left, 30);
                    .px2rem(font-size, 30);
                }
            }
            .title{
                .px2rem(font-size, 28);
                .px2rem(margin-left, 30);
                .px2rem(line-height, 80);
            }
            .cunle{
                .px2rem(font-size, 12);
                .px2rem(margin-left, 30);
                .px2rem(padding-bottom, 40);
                color: #cccccc;
            }
        }       
    }
    .main div:last-child{
        .px2rem(margin-bottom, 0);
    }
    .footer{
        .px2rem(line-height, 90);
        .px2rem(font-size, 26);
        text-align: center;
        color: #999;
    }
}